Each XML request and response message has attributes for the root element (or document element).
| Element / @Attribute | Parent | Info | Values | Occurrence |
|---|---|---|---|---|
| @EchoToken | Root | A reference for additional message identification, assigned by the requesting host system. | GUID, Globally unique identifier | 1 |
| @PrimaryLangID | Root | The primary language preference for the message encoded as ISO 639-3, e.g. eng or nld. |
Refer to ISO 639-3 | 1 |
| @Target | Root | Test or production target system indicator. | Production |
0..1 |
| @TimeStamp | Root | ISO 8601 encoded timestamp indicating the creation date and time of the message. | [yyyy-MM-ddTHH:mm:ssTZD] | 0..1 |
| @Version | Root | The OpenTravel message version indicated by a decimal value. | 1.0 |
0..1 |